Elpris- och CO₂-prognos i Home Assistant för SE1 till SE4

type: custom:apexcharts-card
header:
  show: true
  title: Energy Price Forecast EU
graph_span: 3d
span:
  start: day
now:
  show: true
  label: Nu
yaxis:
  - id: price
    decimals: 3
    apex_config:
      title:
        text: EUR/kWh
all_series_config:
  yaxis_id: price
  type: line
  curve: stepline
  extend_to: false
  stroke_width: 2
  float_precision: 4
  show:
    legend_value: false
series:
  # Replace ALL three placeholders with the SAME price or retail sensor.
  - entity: sensor.CHANGE_ME
    name: Officiellt (day-ahead)
    color: "#43a047"
    data_generator: |
      const raw = [...(entity.attributes.raw_today ?? []),
                   ...(entity.attributes.raw_tomorrow ?? [])];
      const slots = raw.map(e => ({
        start: Date.parse(e.start), end: Date.parse(e.end), value: e.value
      })).filter(e => Number.isFinite(e.start) && Number.isFinite(e.end)
        && e.end > e.start && typeof e.value === 'number' && Number.isFinite(e.value))
        .sort((a, b) => a.start - b.start);
      const points = [];
      let previousEnd = null;
      for (const slot of slots) {
        if (previousEnd !== null && slot.start > previousEnd) {
          points.push([previousEnd, null], [slot.start - 1, null]);
        }
        points.push([slot.start, slot.value], [slot.end - 1, slot.value]);
        previousEnd = slot.end;
      }
      return points;
  - entity: sensor.CHANGE_ME
    name: Aktuell prognos
    color: "#fb8c00"
    data_generator: |
      const raw = entity.attributes.raw_forecast ?? [];
      const slots = raw.map(e => ({
        start: Date.parse(e.start), end: Date.parse(e.end), value: e.value
      })).filter(e => Number.isFinite(e.start) && Number.isFinite(e.end)
        && e.end > e.start && typeof e.value === 'number' && Number.isFinite(e.value))
        .sort((a, b) => a.start - b.start);
      const points = [];
      let previousEnd = null;
      for (const slot of slots) {
        if (previousEnd !== null && slot.start > previousEnd) {
          points.push([previousEnd, null], [slot.start - 1, null]);
        }
        points.push([slot.start, slot.value], [slot.end - 1, slot.value]);
        previousEnd = slot.end;
      }
      return points;
  - entity: sensor.CHANGE_ME
    name: Sparad prognos (först mottagen)
    color: "#1e88e5"
    stroke_dash: 5
    data_generator: |
      const raw = entity.attributes.raw_forecast_reference ?? [];
      const slots = raw.map(e => ({
        start: Date.parse(e.start), end: Date.parse(e.end), value: e.value
      })).filter(e => Number.isFinite(e.start) && Number.isFinite(e.end)
        && e.end > e.start && typeof e.value === 'number' && Number.isFinite(e.value))
        .sort((a, b) => a.start - b.start);
      const points = [];
      let previousEnd = null;
      for (const slot of slots) {
        if (previousEnd !== null && slot.start > previousEnd) {
          points.push([previousEnd, null], [slot.start - 1, null]);
        }
        points.push([slot.start, slot.value], [slot.end - 1, slot.value]);
        previousEnd = slot.end;
      }
      return points;